Home / 767,988-1,059,823.44-428,456.16

Finding the Fourth Proportional to 767,988, 1,059,823.44 and 428,456.16

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Solution

The fourth proportional to 767,988, 1,059,823.44 and 428,456.16 is: 591,269.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,988 : 1,059,823.44 = 428,456.16 : x
  2. Step 2: Convert to fraction form
    767,988/1,059,823.44 = 428,456.16/x
  3. Step 3: Cross multiply
    767,988x = 1,059,823.44 × 428,456.16
  4. Step 4: Simplify right side
    767,988x = 454,087,881,380.39
  5. Step 5: Solve for x
    x = 454,087,881,380.39/767,988
  6. Step 6: Final answer
    x = 591,269.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.